package cho00;

/**
 * Created by 春旺 on 2017/4/15.


public class MyDoc {
}
*/
// Server Classes
abstract class Data {
    abstract public void DisplayValue();
}

class Integer extends  Data {
    int value;
    Integer() {
        value=100;
    }


    public void DisplayValue(){
        System.out.println (value);
    }
}

// Pattern Classes
abstract class Factory {
    abstract public Data CreateDataObject();
}

class IntFactory extends Factory {
    public Data CreateDataObject(){
        return new Integer();
    }
}

class ByteFactory extends Factory {
    public Data CreateDataObject() {
    return new Integer();
    }
}




class Document {
    Data pd;
    Document(Factory pf){
        pd = pf.CreateDataObject();
    }
    public void DisplayData(){
        pd.DisplayValue();
    }
}

////Client classes

public class MyDoc {
    static Document d;
    public static void main(String[] args) {
        d = new Document(new ByteFactory() );
        d.DisplayData();

    }
}
